Plow.



R. C. CAUGHEY.

PLOW.

APPLICATION FILED AIJG,4,1913y 1,090,1 34;. Patented Mar. 1'?, 1914.

'NETE ATENT OFFICE.

ROBERT C. CAUGI-IEY, OF DIXON, ILLINOIS, ASSIGNOR TO M. RUMELY COMPANY, OF LAPORTE, INDIANA, A CORPORATION 0F INDIANA.

PLOW.

Patented Mar. 17, 19114.

Original application filed February 17, 1913, Serial No. 748,849. Divided and this application filed August Serial No. 782,788.

To all whom it may concern Be it known that I, ROBERT C. CA'UGHEY, a citizen of the United States, residing at Dixon, in the county 0i Lee and State of Illinois, have invented a certain new and useful Improvement in Plows, of which the following is a specification.

My invention relates to improvements in plows and contains the mattei' shown in my now pending application #1 -748,849, filed February 17, 1913, oit which this is a divisional ease and has for one object to provide means for automatically releasing the plow when it comes in contact with any movable object or an object of sutiicient size or weight or resistance to interfere to too great an extent with the forward movement of the plow. It is illustrated diagrammatically in one form in the accompanying drawing, wherein- Figure l is a side elevation of a plow with parts broken away; Fig. 2 is a section along the line 2-2 of Fig. 1; Fig. 3 is a section along the line 3-3 ol Fig. 2. Fig. 4l is a plan View.

Like parts are indicated by the same letter throughout the several igures.

A is a plow beam which would normally be connected to a gang plow frame not here shown which is made up of two parallel spaced beam members A1, A2 held together by the bolts A3, A4.

A5 is a plow frame pivoted on the bolt A3 free to swing on this bolt between the beams A1, A2 slotted at A6 to engage the bolt A4 and apertured at A7 to engage a U-shaped link or yoke AS.

A9 is a plow share rigidly mounted on the frame A5 and held in position thereby.

B is a tie block o1 metal or other suitable material through which pass both arms oi the U-shaped screw threaded link A8 and upon which rests the two nuts B1, B2 which hold the link in position with respect to the block B.

B3 is a release pin of wood or other suitable material passing through the block B projecting outwardly on either side to rest upon the beams A1, A2, the arrangement being such that the ends B1, B2 hold the pin B3,

the` block B and the frame A6 lirmly to gether, the bottom o1 the slot A being drawn up tight against the bolt A4 to pre vent vibration or chattering` as the plow is operated.

As long as the resistance encountered by the plow does not become too great or pass a margin ot' safety, the plow will be drawn through the ground by the forward movement oit the plow beam, maintaining its fixed position. with respect to the plow beam. However, in case the plow encounters a rock or other movable object and the pressure be comes too great, there will be a force movement tending to rotate the plow and iframe about the bolt A, pulling downwardly on the pin B, and the pin BS is so designed that it will give by shearing before the pressure is great enough to cause damage. When this happens the plow und frame will be free to swing loosely about the bolt A and will gradually swing into the position shown in dotted lines in Fig. l.

I claim:

1. The combination with a plow beam oi a supporting member pivotally mounted thereon, a plow share rigidly attached to said supporting member, a yoke loosely conneeted to said supporting member and a breaking member interposed between said yoke and the plow beam, said yoke being adjustable with respect to the plow beam.

2. The combination with a plow beam Ot a supporting member pivotally mounted thereon, a plow share rigidly attached to said supporting member, a yoke loosely connected to said supporting member and a breaking member interposed between said yoke and the plow beam. said breaking membei-being removable, said yoke being adjustable with respeet to the plow beam.

The combination with a plow beam of a plow share rotatably mounted thereon, yielding means it'or holding said plow share againslfrotation with respect to said plow beam, means :tor adjusting the relation between said yielding means, the plow share and the plow beam to compensate for wear o1 the yielding means, said adjusting means ture in the presence of two Witnesses this 30th day of July, 1913.

ROBERT C. CAUGHEY.

comprising a yoke, a tie block containing the yielding means in engagement with said yoke, the ends of said yoke being soewthreaded, and nuts screw-threaded on the l l ends of said yoke and n engagement With 1 'Vtnesses: said tle block. l F. D. STEPHAN,

In testimony whereof, I LK my sgnai J. F. HILL.

Gopiezs of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

